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Chaos of Operations

Chaos of operations started as a game developed by Cody Childers as part of his Master's in Games & Playable media. This is a port from the original board game form to a browser playable one, done by Cody Childers and Bennett Roesch.


This game is best played when each player is sitting side by side at a table. Each player gets one of the ‘1’ number cards, and places it in front of them. Each player gets 2 plus operations, 2 minus operations, 2 multiplication operations, 2 division operations, 1 exponent operation, and 1 modulus operation. For the next step, each player gets 10 blank number cards. Decide if you would like to play the game on easy, medium, or hard difficulty.

  • If you decided on easy, write the numbers 1-10 on the blank number cards in each player’s hand. It will look like the image below, but with the numbers 1-10 for each player instead of the large ones from the dice roll.
  • If you would like to play on medium, roll the d20 10 times, and write the resulting number on one of each player’s cards. It will also look similar to the image below, but with mostly smaller numbers.
  • If you have chosen hard, roll the d10 and d% 10 times. Each time you roll it, sum the two numbers and write their values on 2 cards, one belonging to each player. For example, if you roll the dice 10 times and get the numbers. 43, 4, 80, 83, 96, 17, 30, 70, 23, and 55, each player should end up with one of the formerly blank number cards that has each of those numbers. These numbers get laid out on the table in front of each player. Lay out the operation cards by your number cards. Finally, take one of the number 1 cards for each player and place them in the play area. The player with the most mathematical knowledge moves first.

The Game

Place one of your number cards and one of your operation cards on either your or your opponent’s equation. You can insert it anywhere in either equation, provided that it is still a valid equation (see images below). The equation will be valid as long as there are not 2 number cards or 2 operation cards sequentially.


The game finishes when a player starts their turn and does not have any operations or numbers to play. Calculate the result of each player’s equation, being careful of the order of operations. Remember that you compute the exponents first (because there are no parenthesis), multiplication, division, and modulus in the order they appear second, and addition and subtraction in the order they appear last. If an equation evaluates to indefinite form anywhere (something divided by 0 or 0 to the 0th power), the result is to be treated as negative infinity. The player with the largest number at the end of the game wins.

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